Helianthus annuus Music Box Seeds Ref: TM01406303 SowingSow early spring to early summer outdoors where they are to flower. Sow 12mm (½in) deep in rows 30cm (12in) apart. Germination usually takes around 21 days. Sowing can also be done indoors in early spring, sow the seed individually in 7.5cm (3in) pots. Germination takes 1-2 weeks at 20C (70F). Gradually acclimatise to outdoor conditions for 10-15 days before planting out after all risk of frost has gone.GrowingWhen large enough to handle, thin out the seedlings to 30cm (12in) apart.Aftercare They prefer a sunny open site but will grow in most soils.FloweringSummercroppingPlant typeHardy Annual Price: £1.99 Quantity: